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Basic Characteristics of a Self-Compensated Hydrostatic Journal Bearing  

Park Chun Hong (한국기계연구원 공작기계그룹)
Lee Young Joon (금오공대 대학원 기계공학과)
Hong Seong Wook (금오공대 기전공학과)
Lee Husang (한국기계연구원 공작기계그룹)
Publication Information
Journal of the Korean Society for Precision Engineering / v.22, no.5, 2005 , pp. 159-166 More about this Journal
Abstract
A self-compensated water-hydrostatic bearing is well known to have advantages in stiffness. In this paper, its concept is extended to a hydrostatic journal bearing for achieving higher stiffness. The finite element method is applied to analyze the load characteristics of the self-compensated hydrostatic journal bearing. The analysis results reveal that the self-compensated journal bearing has higher load capacity and higher stiffness than conventional, fixed capillary journal bearings. and that this benefit degrades in the case of high eccentricity. Thus, a spindle system with self-compensated journal bearings must be designed to ensure a sufficiently large load capacity. A rectangular type capillary is also introduced with consideration of the practical application of the self-compensated hydrostatic journal bearing. Theoretical analysis results show that the rectangular type capillary is more beneficial than conventional annular type capillaries in practical use. The experimental verification on the analysis method is made to show that the experimental results are in good agreement with theoretical results.
Keywords
Self compensating type; Hydrostatic journal bearing; Load characteristics; FEM analysis; Rectangular type capillary;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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